DAta grid view autosize mode fill column broken!

I have problem with the data gridview where the auto size columns fill mode where the smaller columns get sized in weird ways when the user maximizes and restores the window. Here is a simple steps that show what I do

a- create app
b - add a data grdiview
c - dock fill the grid
d - add three columns
e - set the second and thrid column fill weight to 10
f - set the grids autosize column mode to fill
g - run
h - see how the last two columns are -- good
i - maximumize form
j - restore form

Columns are screwed up!! second and third column shrink to nothing!
this make fill column totally unusable for my customer.

same thing doesn't occur is I manually resize form to be large then small.

please fix!
james